Stubborn refusal to obey or comply with rules, laws, or authority figures.
From Latin 'contumacia' (stubbornness, resistance), derived from 'contumac-' meaning stubborn or obstinate. The '-ity' suffix creates an abstract noun form.
Legal systems actually have special terms for 'contumacy'—judges can hold people in contempt of court specifically for showing contumacity, making it a courtroom crime!
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